[PATCH] D111863: [libunwind] Add an interface for dynamic .eh_frame registration

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lhames added a comment.

In D111863#3074404 <https://reviews.llvm.org/D111863#3074404>, @housel wrote:

> To be clear, this new code parses exactly as much of each FDE as the existing `__register_frame`/`__unw_add_dynamic_fde` does, including doing the same work to compute the record length. Neither needs to parse the instructions at registration time.

Right -- I should have actually looked at the implementation of `__unw_add_dynamic_fde`. ;)

@joerg -- We have always registered every FDE in the JIT. This is an improvement over what we have, not a regression. Is there some more efficient approach that you would recommend? Otherwise I think this should go in.


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https://reviews.llvm.org/D111863